1. Select imported TPU raw materials, soft and smooth, and have amazing flexibility 2. Real machine mold opening, general high-precision injection molding machine high temperature molding, precise reservation of each functional hole position, fully fit the fuselage. 3. With thicker design, it is comfortable to wear and easy to use. The material has no harm to human skin and is not allergic. 4. Waterproof, sweatproof, comfortable and soft. 5. Applicable for Huawei watch Fit smart watch
